公开(公告)号：US20150275068A1

公开(公告)日：2015-10-01

申请号：US14668147

申请日：2015-03-25

Applicant: Chevron U.S.A. Inc.

Inventor： Robert George Shong ,  Varadarajan Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

IPC: C09K8/584 ,  E21B43/16 ,  C07C59/305

CPC classification number: C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

Abstract: The present disclosure generally relates to a multicarboxylate, such as an alkyl alkoxy dicarboxylate a method of making the multicarboxylate, and methods to use the multicarboxylate. A specific embodiment of the disclosure is a compound comprising the chemical formula: R1-R2-R3, wherein R1 comprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking R1 and R2; R2 comprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 comprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. The composition has a variety of uses but in some embodiments may be used in enhanced oil recovery processes.

Abstract translation: 本公开内容通常涉及多羧酸盐，例如烷基烷氧基二羧酸盐，制备多羧酸盐的方法，以及使用多羧酸盐的方法。 本公开的具体实施方案是包含化学式：R 1 -R 2 -R 3的化合物，其中R 1包含具有7-150个碳原子的支链或非支链，饱和或不饱和的环状或非环状疏水性碳链; 连接R1和R2的氧原子; R2包含环氧乙烷，环氧丙烷，环氧丁烷或其组合的烷氧基化链; 并且R 3包含包含2-12个碳原子和2-5个-COOH或-COOM基团的支链或非支链烃链，其中M是一价，二价或三价阳离子。 该组合物具有各种用途，但在一些实施方案中可用于增强的油回收方法中。

公开(公告)号：US11905461B2

公开(公告)日：2024-02-20

申请号：US16922999

申请日：2020-07-07

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Taimur Malik ,  Lin Zuo ,  Jimin Daniel Zhou ,  Nabijan Nizamidin ,  Gregory A. Winslow ,  Reza Banki ,  Mohamad Salman

IPC: E21B43/16 ,  C09K8/60 ,  C09K8/94

CPC classification number: C09K8/602 ,  C09K8/94 ,  E21B43/166

Abstract: Disclosed are foam precursor compositions, foamed compositions, and methods of using these foamed compositions for the stimulation of unconventional reservoirs.

公开(公告)号：US20220372363A1

公开(公告)日：2022-11-24

申请号：US17670988

申请日：2022-02-14

Applicant: CHEVRON U.S.A. INC. ,  Chevron Oronite Company LLC

Inventor： Dennis A. Alexis ,  Gayani Pinnawala Arachchilage ,  Varadarajan Dwarakanath ,  Do Hoon Kim ,  Taimur Malik ,  Gregory A. Winslow ,  Aaron Wilhelm

IPC: C09K8/584 ,  C09K8/588 ,  C09K8/68 ,  F17D1/16 ,  C09K8/88 ,  C09K8/52 ,  E21B43/26 ,  C08L33/26 ,  C09K8/60

Abstract: Disclosed are compositions and methods for use in oil and gas operations.

公开(公告)号：US11248159B2

公开(公告)日：2022-02-15

申请号：US16259247

申请日：2019-01-28

Applicant: Chevron U.S.A. Inc.

Inventor： Robert George Shong ,  Varadarajan Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

IPC: C09K8/584 ,  C07C59/305 ,  E21B43/16 ,  C09K8/588

Abstract: The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. Embodiments relate to an aqueous stream and the use thereof. The aqueous stream includes a compound having the chemical formula: R1-R2-R3, wherein R1 includes a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having an oxygen atom linking R1 and R2; R2 includes an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 includes a branched or unbranched hydrocarbon chain and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. R3 includes 2-12 carbon atoms.

公开(公告)号：US20200347285A1

公开(公告)日：2020-11-05

申请号：US16851875

申请日：2020-04-17

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik ,  Logan Jackson ,  Tom Lynch ,  Ronald Robinson ,  Fraces Fournier ,  Hong Yang ,  Sukhjit Aujila

IPC: C09K8/588 ,  C09K8/584 ,  E21B43/20

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US10822539B2

公开(公告)日：2020-11-03

申请号：US16709872

申请日：2019-12-10

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik ,  Logan Jackson ,  Tom Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla

IPC: C09K8/588 ,  C09K8/584 ,  C09K8/68 ,  C09K8/88 ,  E21B43/26 ,  E21B43/20

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US20200165778A1

公开(公告)日：2020-05-28

申请号：US15781893

申请日：2016-12-07

Applicant: KEMIRA OYJ ,  CHEVRON U.S.A. INC.

Inventor： Logan Jackson ,  Thomas J. Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla ,  Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik

IPC: D21H17/37 ,  C02F1/56 ,  C02F11/14 ,  C08J3/07

Abstract: Provided herein are liquid polymer (LP) compositions comprising an acrylamide (co)polymer, as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of acrylamide (co)polymer of from about 50 to about 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in dewatering, clarification, flocculation and/or thickening applications, and the like.

公开(公告)号：US10337303B2

公开(公告)日：2019-07-02

申请号：US15511563

申请日：2016-09-02

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Robert G. Shong ,  Gregory Winslow ,  Taimur Malik ,  Marlon Solano

IPC: E21B43/16 ,  C09K8/58 ,  C09K8/584 ,  C09K8/588 ,  C08L5/00 ,  C08L81/08

Abstract: Additional oil recovery is obtained from a reservoir with a composition comprising at least a coupling solvent typically employed in waterborne coating compositions. Embodiments include recovering hydrocarbons using at least one coupling solvent, such as an oxygenated coupling solvent. The coupling solvent increases the mutual solubility with water at the injection temperature to facilitate the mixing and injection, particularly with an optional co-solvent. The coupling solvent helps mitigate formation plugging and improve performance when injected into a formation, as the solvent mixture moves from being miscible in the injection field water to being miscible in the reservoir oil, mobilizing the reservoir oil to increase oil recovery.

公开(公告)号：US20180275036A1

公开(公告)日：2018-09-27

申请号：US15996040

申请日：2018-06-01

Applicant: Chevron U.S.A. Inc.

Inventor： Varadarajan Dwarakanath ,  Dustin L. Walker ,  David R. Espinosa ,  Dennis A. Alexis ,  Harold C. Linnemeyer ,  Marlon Solano

IPC: G01N11/00 ,  E21B47/00 ,  E21B43/26 ,  E21B43/16 ,  G01L13/00

CPC classification number: G01N11/00 ,  B01D2101/04 ,  E21B43/16 ,  E21B43/26 ,  E21B47/00 ,  G01L13/00 ,  G01N2011/006

Abstract: Provided herein are portable apparatus as well as methods of analyzing an injection fluid using these portable apparatus. In some embodiments, the injection fluid can contain a polymer, but a polymer is not necessary. For example, the portable apparatus and methods may be used to determine viscosity, long term injectivity, filter ratio, or any combination thereof of the injection fluid.

公开(公告)号：US20180155505A1

公开(公告)日：2018-06-07

申请号：US15835020

申请日：2017-12-07

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis A. Alexis ,  Varadarajan Dwarakanath ,  David R. Espinosa ,  Taimur Malik ,  Peter G. New ,  Adam C. Jackson ,  Christopher Michael Niemi

IPC: C08J3/00 ,  C09K8/588 ,  E21B43/16

CPC classification number: C08J3/005 ,  C08J3/03 ,  C08J2300/00 ,  C08J2333/26 ,  C09K8/588 ,  E21B43/16 ,  E21B43/26

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing aqueous polymer solutions by combining these LP compositions with an aqueous fluid. The resulting aqueous polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these aqueous polymer solutions in oil and gas operations, including enhanced oil recovery.